LI, X. H.; XU, Y. Second Maximal Subgroups of a Sylow p-Subgroup and the p-Nilpotency of Finite Groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 5, p. 694–698, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2170. Acesso em: 5 dec. 2025.